feat(stack): add the microVM guest configuration seam (RIG-3789) - #1281
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Add RuntimeBackend, GuestArtifact, and GuestDir to stack.Config with digest-pin and mutual-exclusion validation. Wire the backend and air-gapped guest directory into runnerSpec using the frozen guest filenames while preserving zero-value omission. The artifact field is validated here; materialization lands in the next stacked change. Spec-impact: none. Refs RIG-3789
Keep the seam limited to RuntimeBackend and the air-gapped GuestDir path. Remove the inert GuestArtifact validation field; the next stacked materialization change will add it together with its consumer. Reject relative GuestDir paths, gate guest arguments on the microvm backend, and preserve the zero-value runner argv. Spec-impact: none. Refs RIG-3789
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This was referenced Sep 18, 2026
rigel-mintaka
added this pull request to stack #1293
September 18, 2026 17:09
mattwilkinsonn
approved these changes
Sep 18, 2026
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This PR is part of a stack containing 3 PRs:
mainKeep the seam limited to RuntimeBackend and the air-gapped GuestDir path. Remove the inert GuestArtifact validation field; the next stacked materialization change will add it together with its consumer. Reject relative GuestDir paths, gate guest arguments on the microvm backend, and preserve the zero-value runner argv.
Spec-impact: none. Refs RIG-3789